4/21/2008 @ 7:45PM

In Depth: Europe's Most Congested Cities

20. Vienna, Austria

Average speed: 28.6 mph or 46 kph

It’s no surprise Vienna shows up at the bottom of our most congested cities in Europe list. After all, Austria has the most avid public transportation users in the European Union. About 35% of trips taken to Vienna during the week are by public transportation, one of the most extensive systems in the world. Vienna’s road network is also robust. The Südosttangente is Vienna’s busiest road, with 210,000 motor vehicles traveling it daily. In addition to promoting its public transportation system, Vienna has also implemented 30 km speed limits in many areas to calm traffic, and it has efforts in place to widen roads to make commuting safer for pedestrians.